Some poor countries sell off their natural resources or accept toxic waste from other countries in order to improve their economy. true or false

True

Explanation:

To understand the case as given in the question let's see the case of Kyoto protocol through which carbon crediting was introduced.

As per the carbon credit concept each country has a limited number of carbon credits which signifies the amount of carbon a country can release on per year basis.

Since poor nations do not have high industrial production, thus their carbon credits are left unused. Developed nations buy these unused carbon credits from poor countries and in lieu of providing employment and development install their manufacturing plants in these countries. In this way they use the resources available in these poor countries and also pollute their environment.

Hence, the given statement is true.